Pneumatic sander.



A. S. CONTI.

PNEUMATIC SANDER.

APPLICATION FILED APR. I2. 1915.

Patented Nov. 16, 1915.

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A. s. CONTI. PNEUMATIC SANDER.

APPLICATION FILED APR. I2. |915.

Patented Nov.y 16, 1915.

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ANTHONY S. CONTI, 0F CHICAGO, ILLINOIS, ASSIGNOR 0F THIRTY-FIVE ONE-I-IUNDREDTHS TO MORTON AQLEA AND TI-IIRTY ONE-HUNDREDTHS TO CHARLES V.JEWELL, BOTH OF CHICAGO, ILLINOIS. i

PNEUMATIC SANDER.

Application filed April 12, 1915.

To all whom t may concern? Be it known that I, ANTHONY S. CONTI, acitizen of the United States, and a resident of the city of Chicago,county of Cook, and State of Illinois, have invented certain new anduseful Improvements in Pneumatic Sanders, of which the following is aspecification. i

My invention relates to improvements in pneumatic Sanders especiallyadapted for use on railroad locomotives for sanding the tracks of therailroad, and has for its object the provision of an improvedconstruction of this character which is simple and etlicient in use.

rlhe invention consists in the combinations and arrangements of partshereinafter described and claimed.

rIhe invention will be best understood by reference to the accompanyingdrawings forming a part of this specification, and in which7 Figure 1 isa horizontal section through the lower portion of an ordinary sand boXequipped with means embodying my invention, showing parts of said meansin top plan view and other parts in horizontal section, Fig. 2, ahorizontal section taken on substantially line 2-2 of Fig. 1, Fig. 3, aface view of the sand applying attachment shown partially in section,Fig. 4, a section on line 4 4 of Fig. 8, and Fig. 5, a section on line 55 of Fig. 3.

'Ihe preferred form of construction as illustrated in the drawingscomprises a body 6 adapted to be secured by means of bolts 7 to the sideof a sand boX 8 as indicated in Fig. 1. The sand boX 8 is provided withtwo horizontal discharge passages 9 registering with correspondingpassages 10 in body 1. Arranged just outside of each of the passages 10is a horizontal discharge passage 11 parallel therewith and connectedtherewith by means of a transverse horizontal passage 12 as indicated.Arranged in each of the discharge passages 11 is an air nozzle 13adapted to project a blast of air outwardly through said passage into adischarge pipe 18 leading therefrom. rlhe inner end of nozzle 13 opensinto an air supply chamber 14 supplied with com pressed air through asupply pipe 15 and equipped with a strainer plate 16 adaptedSpecification of Letters Pateiit.

Patented Nov. 16, 1915.

Serial No. 20,873.

to strain the air as it nozzle.

Atmospheric air is admitted to the upper portion of each of the passages10 through an unobstructed air supply pipe 17 extending upwardlytherefrom and having its upper end turned downwardly and inwardly asshown to prevent the entry of rain or other fiying particles therein.The discharge pipe 13 is connected with the usual sand supply pipe (notshown) as will be readily understood. In use when it is desired tosupply sand to either of the sand supplying pipes of the locomotive airis admitted to the corresponding pipe 15 which projects a blastoutwardly through a discharge pipe 13 to effect a discharge of the sandtherethrough. Owing to the fact that the passage leading to thedischarge passage is horizontally arranged the flow of sand isautomatically discontinued upon discontinuance of the supply of air.This use of the compressed air is largely a suction action through thepassages 1Q, 10 and 9. I have found from experience that there is atendency for the sand to clog or choke in this passage. To prevent thisclogging or choking I have provided the air inlet pipe 17 in the supplypassage leading to the discharge which admits atmospheric air to theupper portion thereof above the sand therein and this supply of air soprovided at the point specified practically eliminates this tendency toclog and choke in the supply passage.

While I have illustrated and described the preferred form ofconstruction for carrying my invention into effect, this is capable ofvariation and modification without departing from the spirit of theinvention. I, therefore, do not wish to be limited to the precisedetails of construction set forth, but desire to avail myself of suchvariations and modifications as come within the scope of the appendedclaims.

Having described my invention what I claim as new and desire to secureby Letters Patent is:

1. A sander comprising a body provided with a discharge passage; anozzle directed into said discharge passage; a horizontally arrangedsupply passage leading to said discharge passage and nozzle;unobstructed passes through said with a discharge passage; a nozzledirected into said discharge passage; a horizontally arranged supplypassage leading to said discharge passage Vand said nzzle; means foradmitting air into said supply passage, said means comprising anunobstructed pipe projecting upwardly therefrom and having its upper endturned downwardly; and means for supplying fluid under pressure to saidnozzle, substantially as described.

3. A sander comprising a sand box provided with a horizontal dischargepassage;

a body secured to said box and provided with a horizontal passageregistering with said discharge passage; a horizontal passage in saidbody parallel with the first mentioned passage therein; a lateralhorizontal passage in said body connecting said parallel passages; andan unobstructed air pipe leading into the upper portion of said firstmentioned passage in said body, said pipe having its upper end turneddownwardly, substantially as described.

In testimony whereof l have signed my name to this specilication in thepresence of two subscribing witnesses.

ANTHONY S. CONTI.

Witnesses:

ARTHUR O. OLSON, HELEN F. LILLIs.

Copies of this patentrmay be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

